反应详情

From 2.7 g (15.7 mmol) of 4-aminobenzenesulfonamide and 4.8 g (15.7 mmol) of methyl 4-chloro-2-N-phenoxycarbonylanthranilate in a manner similar to Preparation Example 1, 7.9 g (yield 94%) of methyl 2-{[(4-aminobenzenesulfonylamino)carbonyl]amino}-4-chlorobenzoate was obtained. Property: colorless amorphous, PMR (δppm, DMSO-d6): 3.59 (3H, s), 5.37 (2H, s), 6.45 (2H, d), 6.83 (1H, dd), 7.41 (2H, d), 7.81 (1H, d), 8.66 (1H, d), 9.64 (1H, s).